.wrap-alert{
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  display: none;
  position: fixed;

  .wrap{
    width: 100%;
    height: 100%;
    opacity: .6;
    filter: alpha(opacity(60));
    top: 0;
    left: 0;
    position: fixed;
    background: black;
  }

  .box-alert{
    width: 450px;
    height: auto;
    max-width: 100%;
    padding: 30px 20px;
    font-size: 20px;
    text-align: center;
    position: fixed;
    top: 50%;
    left: 50%;
    margin: -100px 0 0 -225px;
    border-radius: 5px;
    border: solid 2px #dedede;
    -webkit-box-shadow: 0 0 40px white;
    -moz-box-shadow: 0 0 40px rgba(255,255,255,0.3);
    box-shadow: 0 0 40px white;
    background: rgba(255,255,255,1);
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;

    .btn-sure{
      width: 50%;
      height: 50px;
      line-height: 50px;
      border-radius: 5px;
      display: block;
      color: white;
      margin: 30px auto 0;
      text-decoration: none;
      background: #00a0d8;
    }
  }
}
.wrap-alert.active{
  display: block;
}




@media screen and (max-width: 720px) {
  .box-alert{
    width: 90%;
    margin: 0;
    transform: translate(-50%, -50%);
  }



}